Apparatus for filling tins with a gas heavier than air



c. LOEHLE 2,019,422 APPARATUS FOR FILLING TINS WITH A GAS HEAVIER THANAIR Oct. 29, 1935.

Filed July 8, 1931 2 Sheets-Sheet l Oct. 29, 1935. Q LQEHLE APPARATUSFOR FILLING TINS WiTH A GAS HEAVIER THAN AIR ' Filed July 8, 1951 2Sheets- Sheet 2 W wwv/Ma Patented Oct. 29, 1935 PATENT OFFICE 2,019,422manarus roa Fume rms wrrn A GAS nmvmn man Am Carl Loehie, Zurich,Switzerland Application July 8, 1931, Serial No. 549,508

In Switzerlandfieptember 8, 1930 Claims. (01. 226-68) The presentinvention relates to an apparatus for filling tins containing solidvictuals, tobacco,

etc., with an inert gas heavier than air.

It is of great importance for the preserving of 5 victuals, tobacco,etc., to have an inert gas instead of air in the interstices of thecontents of the tins. If the inert gas is heavier than air, it ispossible to displace the air from the tins by letting an inert gas fiowinto them. As this process needs a certain time, it is only possible toutilize the full capacity of the sealing machine by employing anapparatus, in which several tins can be exposed to the influence of theinert gas at the same time and for a certain length of time.

5 The drawings represent apparatus made according to the presentinvention and suitable for the indicated process.

Fig. 1 is a longitudinal section diagrammatically representing anapparatus with a container,

and Fig. 2 shows a cross-section on the line HII of Fi 1.

Fig. 3 is a plan view, and Fig. 4 is a cross-section on the line IV-IVof Fig. 3, oi a further example of the invention.

5 Fig. 5 represents a cross-section on the line V-V of Fig. 6 and Fig. 6is a plan view of a variation of the last example of the invention.

Fig. 7 shows a cross-section on the line VII-VII 01 Fig. 8, and Fig. 8is a plan view of another ex- 30 ample.

Referring to Figs. 1 and 2, the container 1 is provided with a band 4supported by rollers 2 and 3. This band carries the tins from left toright. A tin to be filled with gas is put into the con- 35 tainer at theleft end. The tin at the right end is provided with its cover and passedinto the sealing machine. The gas enters through a tube 6.

The apparatus shown in Figs. 3 and 4 is supposed to contain aninstallation, not indicated 40 in the drawings, for ca ying the tins inthe direction of the hands of a clock. The tin So has gone throughalmost the whole circular way of the container I, and, being ready to besealed, is taken out through an opening in the cover. The tin 5b 45 tobe filled with gas is put into the container.

The gas enters through a tube 6.

The apparatus shown in Figs. 3 and 4 can be advantageously modified, sothat the container itself carries the tins in the circular way, as

50 shown in Figs. 5 and 6, which represent crosssectional and plan viewsrespectively. The container l is provided with a rail 1, which issupported by rollers 8 provided with a flange 9. The rollers aresupported by brackets III on columns 55 H. The columns also carry thecover I2, which closes the container, but does not touch it, in ordernot to prevent its rotation. At least three columns I I are required,which can be connected with one another by small crossbeams l3. Thecover has an opening for putting in and taking 5 out the tins. Therotating movement can be effected by hand utilizing handles it, or byany mechanical appara If the diameter of the container is small, it maybe advantageous to omit the inner wall. In 10 this case, the apparatusis diagrammatically represented in Figs. 7 and 8 in cross-section andplan view respectively. The container l into which the tins 5 areplaced, is provided with a rail 1 carried by rollers 8, which areprovidedwith a flange 9. 15 The rollers are supported on brackets ill oncolumns H. The columns carry the cover II, which closes the container,but does not touch it, and which has an opening for putting in and.taking out the tins and .through which the pipe 6 extends 2 to near thebottom of the container for supplying gas as described above. At leastthree columns I I are required, which can be connected with one anotherby small crossbeams, for which the brackets in are enlarged. In thiscase it is possible to rotate the container about a central pivot.

What I claim is:

1. Apparatus for filling tins. containing victuals, tobacco, etc., witha gas heavier than air at atmospheric pressure; comprising a containerwith closed side walls ,and a cover therefor, means adapted to supportthe tins in a continuous movement, at least one filling and emptyingopening being provided in said cover, and means for supplying gas to thetins.

2. Apparatus for filling tins containing victuals, tobacco, etc., withan inert gas heavier than air at atmospheric pressure; comprising acontainer with closed side walls and a cover therefor, means adapted tosupport the tins in a continuous movement in said container, at leastone filling and emptying opening being provided in said cover, and meansfor supplying gas to the tins.

3. Apparatus for filling tins containing victuals, tobacco, etc., withan inert gas heavier than air at atmospheric pressure, comprising ahorizontal container of rectangular cross-section having closed sidewalls and a cover, a band supported on rollers and adapted to carry thetins from one end of the container to the other, two filling andemptying openings being provided in the cover, and means for supplyinggas to the tins.

4. Apparatus for filling tins containing victuals, tobacco, etc., withan inert gas heavier than uais. tobacco, etc.. with an inert gas heavierthan air at, atmospheric pressure, comprising a horiair at atmosphericpressure, comprising a horizontali cylindrical container of rectangularcrosszontal circular trough with closed side-walls and section withclosed side walls, rollers supporting a cover, the trough beingsupported on rollers and 5 said container to enable it to rotate aboutits adapted for rotating about its vertical axis, said 5 vertical axis,a stationary cover on the container cover being stationary and providedwith at least 7 provided with at least one filling and emptying onefilling and emptying opening and means for opening, and means forsupplying gas to the tins. supp yi s gas to' the tins.

5. Apparatus, for filling tins containing vict- CARL LOEHLE.

